Simple Machines

What simple machine holds things together?

• Wedge
• Screw
• Lever
• Pulley

What simple machine has a wheel with a groove on it that keeps a rope in place?

• pulley
• lever
  lever
• screw
  wedge
• wedge
  screw

Identify this simple machine

• Lever
• Wheel & Axle
• Inclined Plane
• Screw

Two examples of a pulley...

• knife & axe blade
• lightbulb & screw
• flagpole hoist & window blinds
• catapult & teeter totter

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance
• reduce the amount of force needed to do work
• change the direction of the applied force
• all of the above

An inclined plane wrapped around a rod forms this simple machine 

• lever
• pulley
• screw
• wedge 

What type of simple machine is this?

• wheel and axle
• gear
• lever
• inclined plane

All simple machines help make work _________.

• harder
• smaller
• lighter
• easier

Simple machines can change the amount of_______ needed to do work.

• gravity
• people
• force
• pulley

This simple machine helps force objects apart.

• wedge
• lever
• pulley
• inclined plane